You are here

The choice of optical system is critical for the security of double random phase encryption systems

Authors: 

Inbarasan Muniraj, Changliang Guo, Ra’ed Malallah, Liang Zhao, Derek Cassidy, James Ryle, John Healy, John Sheridan

Publication Type: 
Refereed Review Article
Abstract: 
The linear canonical transform (LCT) is used in modeling a coherent light field propagation through first-order optical systems. Recently, a generic optical system, known as the Quadratic Phase Encoding System (QPES), for encrypting a two-dimensional (2D) image has been reported. In such systems, two random phase keys and the individual LCT parameters (α, β, γ) serve as secret keys of the cryptosystem. It is important that such encryption systems also satisfies some dynamic security properties. In this work, we therefore examine such systems using two cryptographic evaluation methods, the avalanche effect and bit independence criterion, which indicate the degree of security of the cryptographic algorithms using QPES. We compared our simulation results with the conventional Fourier and the Fresnel transform based DRPE systems. The results show that the LCT based DRPE has an excellent avalanche and bit independence characteristics compared to the conventional Fourier and Fresnel based encryption systems. Keywords: Quadratic Phase Encoding system, linear canonical transform, Double Random Phase Encryption, Avalanche effect and bit independence criterion.
Digital Object Identifer (DOI): 
xxx
Publication Status: 
Published
Date Accepted for Publication: 
Thursday, 30 March, 2017
Publication Date: 
03/04/2017
Journal: 
Opt. Eng
Research Group: 
Institution: 
National University of Ireland, Dublin (UCD)
Open access repository: 
No